( n + -2 ) x ( n - -4 ) = 27
What are the two n's?
2 answers:
Simplify n + -2 to n - 2
(n - 2)(n + 4) = 27
Expand
n^2 + 4n - 2n - 8 = 27
Simplify n^2 + 4n - 2n - 8 to n^2 + 2n - 8
n^2 + 2n - 8 = 27
Move all terms to one side
n^2 + 2n - 8 - 27 = 0
Simplify n^2 + 2n - 8 - 27 to n^2 + 2n - 35
n^2 + 2n - 35 = 0
Factor n^2 + 2n - 35
(n - 5)(n + 7) = 0
Solve for n
<u>n = 5, -7 </u>
Answer:
9 and 3
Step-by-step explanation:
27/3=9
There are 2 different ways to solve this equation.
Side note: subtracting a negative (4- -3) turns the equation into addition (4+3) and adding a negative (4+ -3) turns the equation into subtraction (4-3)
So the original equation: (n + -2)x(n - -4)=27
Turns into this: (n-2)x(n+4)=27
Way 1: (11-2)x(-1+4)=27
9x3=27
Way 2: (5-2)x(5+4)=27
3x9=27
Hope this helped! :)
You might be interested in
Answer:
r=3 ft
Step-by-step explanation:
it is similarity of two triangles
one
perpendicular side=10 ft
base=10/2=5 ft
second
perpendicular side=10-4=6 ft
Base r=?
18 line segments also for faster and better u can 6 times 3 since there is already three in a triangle.
Answer:
Given
Step-by-step explanation:
<A and <D are supplementary
Answer:
Step-by-step explanation:
( - ∞ , - 3 ) ∪ [ - 1 , ∞ )
9514 1404 393
Answer:
B) positive
Step-by-step explanation:
For even-index roots, which may be either positive or negative, the <u> </u><u><em>positive </em></u><u> </u> root is called the principal root .
